Långbanite

  

Origin: Långban, Varmlands, Sweden

Sample size: 4.5 x 3 x 3 cm

 

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Ex. Grenier collection

Origin: Långban mine, Bergslagen ore distr., Filipstad, Värmland, Sweden (type locality)

Sample size: 3 x 1.5 x 1.5 cm (top), 3.8 x 2.3 x 2.5 cm (2nd row), 3 x 2 x 2 cm (bottom)

 

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This specimen has a calcite vein in which are exposed abundant, sharp, tabular crystals of lustrous, jet black långbanite to an enormous 6 mm across. Långbanite was found, according to Flink, in many areas of the mine. He considered the specimens with rhodonite and hausmannite to be the richest however. Unlike many specimens from Långban this is a truly displayable specimen and clearly among the finest in the world.

  

  

It is comprised of rhodonite and hausmannite. It has a calcite vein in which are exposed crystals of lustrous, jet black långbanite as tabular crystals to 3 mm across.

  

     

 

  

 

     

Several crystals of jet black långbanite to 1 mm are exposed in a mass of manganoan rich diopside. Also present are crystals of hausmannite and scattered calcite.

Origin: Långban, Sweden

Harry von Eckermann Collection

Sample size: 11.5 x 8 x 6 cm (top/2nd/3rd row), 6.2 x 3 x 2 cm (4th/5th row), 4.5 x 3.5 x 3 cm (6th row), 5 x 4 x 3 cm (7th row), 4 x 2.5 x 0.8 cm (8th row), 5 x 3.5 x 1.2 cm (bottom)

 

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Origin: Manggruvan near Långban, Värmland, Sweden

Sample size: 3.5 x 4 cm

 

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